Pneumatic tire tread and buttress



FIG. 1 is a front elevation view of a pneumatic tire tread and buttress showing my new design, it being understood that the pattern is repeated uniformily throughout the circumference of the tread and buttress;

FIG. 2 is a right side elevational view of FIG. 1; and,

FIG. 3 is a left side elevational view of FIG. 1.

The broken line showing of environmental structure in FIGS. 2 and 3 of the drawing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a pneumatic tire tread and buttress, as shown and described. 